<template>
  <div>
    <h1>App</h1>
    message:{{ message }}
    <BsButton></BsButton>
  </div>
</template>
<script setup>
import { provide, ref } from 'vue';

import BsButton from './components/BsButton.vue';
const message = ref('hello jack');

// 提供数据
provide('message', message);
provide('title', 'this is title');

</script>


<style>
div {
  border: solid;
  padding: 20px
}
</style>